Excavating machine



June 30, 1925.

. J. G. FOGARTY EXCAVATING MACHINE "iled July l5, 1920 AJune 30, 192,5.

J. G. FOGARTY EXCAVATING MACHINE Filed July l5, 1920 2 Sheets-Sheet 2Patented June 30, .1925..

- UNITED STATES JOHN e. rocmafri'r,

OF ROCHESTER, NEW YORK,

*SHEPARD, 0F ROCHESTER, YORK.

ASSIGNOR OF ONE-HALF T0 STANLEY EXCAVATING MACHINE.

`T 0 a-ZZ'who/m z't may concer/n:

Be it known that I, JOHN G. .FocAn'rL a citizen of the United States,residing at Rochester, in the county of Monroe and State of NewYork,'have invented certain new and useful .Improvements in ExcavatingMachines.; and'I do hereby declare the following to be a full, clear,and exact description of the same, reference being had to theaccompanying drawings, forming a part of the specificationand to thereference numerals marked thereon.

This invention has todo with excavating machines and, more particularly,with machines ofvthis variety employing a movable boom provided with ascoop or bucket for excavatingy dirt, gravel, and the like, the chiefobject of the-invention being to provide an improved machine of thischaracter having a simple form of construction com prising but few partsof inexpensive and .durablehform,` and which is convenient to` controland rapid in operation. To these' and other ends the invention consistsin cer- -tain improvements 'and combinations of parts, all as will be,hereinafter more fully described, the novel features being pointed outin the claims at the end of the specification.

In the drawings i cavating-machine embodying the invention.

Figure 2 is an enlarged side elevation of a portion of the boom andbucket.

Figure 3 is an end elevation of the boom and bucket as viewed from theright in Figure 2.

Figure Figure 2.

Fil re 5 is a view similar to Figure 2 of a modified form ofconstruction:

Figure 6 is a section on the line 6-6 of Figure 5, and

Figure 7 is an enlarged detail view of a portion of the bucketcontrolling means 4 is a section on the line Lit-J1 of shown in Figure5. n

Similar reference characters throughout the' several views indicate thesame parts.

The embodiment of the invention herein shown and described is intendedmerely way f illustration of the principle of the 1nvention and thepreferred mode of application thereof and. is susceptible of variousmodifications of the details of construction and mode of operation,

The present 91111096.1-

- inner and outer sections 19 and 20 respec- Ament, the term the presentinstance to indicate generally an arrangement Application led July 1,5,1920. Serial No. 396,349.

ment illustrates the invention as applied to an excavating machine of atype commonly in use employing a movable boom and bucket or scoop andprovides a machine adapted for excavating ordigging `operations and alsofor scraping or skimming operations for producing a given surface orgrade. scraping up loose earth, gravel and the like. Referring to thedrawings and more particularly to Figure 1, there is shown anexcavatingmachine having the usual platform 10 on which is carried a steam boiler11, engine 12, and gearing or other operative mechanism driven therebyand indicated generally at 13 for actuating the various parts. Platform10 is rotatably supported on a truck 14 provided with wheels which maybe suitable for travel either on an ordinary` road or railway tracks asmay be desired, the operating mechanism 13'. having the usual provisionwell known in the art for rotating the platform'on -the truck to varythe direction of the boom and direct the operations of the bucket. Theplatform supports the usual post or mast 15 braced as at 16 and haspivotally supported thereon as at 17 for movement in avertical plane theboom for carrying the bucket. These parts being old Y and well known inthe art require no further 8 the boom, indicated generally at 18,preferably comprises tively arranged for relative telescopicmovetelescopic being employed in of the sections by which they may bemoved one upon the other to either extend or draw in the outer sectionon which the bucket is carried for moving the latter longitudinally ofthe boom. The inner section 19 preferably comprises a pair of spacedchannel bars 21 having their flanges 22 turned inwardly, while the outersection 2O comprises similar spaced bars, of smaller size, however,arrange with theiranges turned outwardly, so that the outer section mayslide longitudinally of the inner section Within the latter. The bars ofthe l supporting at their ends, pairs of rollers 27 en a 'n the u er andlower flanges of theg bgzirsg of thepiiuter section for slidablysupportinov the latter. Similarly the inner ends of the bars of theouter`section are provided with projecting brackets 28 on which arerotatably carried pairs of' rollers 29 engaging the inner side of theupper and lower flanges on the inner section so that4 the two sectionsare provided with spaced roller bearings on each other rigidlysupporting the same and permitting longitu-v dinal telescopic movementoi"` the outer section within the inner section. p,

Means are provided for raising and low.-Y ering the boom lsection as aunit in a ver# tical plane comprising, in conjunction with the usualcable winding drum30 on the excavating machine, a cable or fall line 31passed over a sheave 32 rotatably carried at the top of mast 15 andAthence around a sheave 33 rotatably supported by a link or yoke 34pivotally connected with the outer end of the outer boom section. isthen carried back over a sheave 35 rotatably supported at the top ofmast 15 and thence to a link or yoke 36 to which it is attached andwhich is pivotally connected as at 37 to brackets 38 fixed adjacent theouter end of the inner boom section. By this means wher cable 31 isdrawn in paid out the boomis swung vertically and raised or lowered tolocate the bucket for the work and to elevate the latter for dischargingthe material. It is apparent also that the tension of the cable, throughits connection with the outer bom section tends to retract the latterandthe bucket.'

The means for drawing in or retracting and extending the outer boomsection for advancing the bucket to excavate or scrape up the materialcomprises preferably, in conjunction with the usual power operatedwinding drum 39 of the excavating machine, a digging line or cable 40wound thereon and passm downwardly around a sheave 40l rotatab ysupported concentric with the pivotal center of support 17 of thc boom,

from which thecable passes over a sheave 41 rotatably supported at theouter end of the inner boom section. The cable is then carrieddownwardly around a sheave 42 rotatably supported between the inner endsof the bars of the outer section whence the cable is carried over anidler sheave iii @9d Cable 31 Aposition as shown in Shown, the bucket isopen at its top and forward end and the latter is suitably formed forscraping up` the material.

Keeper46 is preferably arcuate in shape so as to conform to a of sheave45 and is provided at its uppex` end with an eye through which cable 40is passed, the keeper 'being also grooved as shown in Figure 3 toprovide -a suitable seat for the cable. 'Bucket 50 has fixed on eitherside at its rear end bearing brackets 51 pivotally connected as at l52with. the

portion of the periljilieryl lower erds of an arching bracket 53 securedf by means of bolts 54 tothe flanges of the boom section. The bucket isthus pivotally supported at its rear end for swinging movement onthesection and at its i'orward end by the cable so that it is raised anddisposed in the substantially horizontal exdrawings cavating positionshown 1n the when the cable is drawn taut and in a substantiallyVertical dumping position, when cable '40 is paid vout .for dischargingthe material through the open frontend of the bucket.

ever, the bucket is swung upwardly about 'its pivot Until bracket 49contacts with the of the bucket in this' When the cable is drawn tauthowrelation the cabie is in effect, through the keeper, fixed to the Thebucket is thus heldin its excavating the drawing. Vith the bucket inthis position further winding outer boom section.,

in of cable 40 on dru-m 39 brings an outward pressure to bear on sheave42 at the inn'er end ofthe outer section thereby forcing the latteroutwardly and advancing the bucket to scrape up the material. Suitablestops (not shown) are` y ovided to limit the" outward movement o thesection and a stop 55 limits its inward movement by engagement with theouter end 25 of the inner section. .Since cable 40 passes over itssheave at the center of pivotal support ot the boom, the latter mayberaised or lowered vertically by the means described without affectingthe tension of cable 40 or disturbing-thelposition of the bucket orrela` tion of the boom sections. The outer boom section is movedtelescopically inward by the force of gravity when the boom is elevatedby the fall line and in fat the tension of the .fall line er which thelocking tained on the digging plied to the telescoping boom sectionserves to retract the latter and the bucket whenever released byslackening. olf the digging line 40 and by releasing a locking meanswhich will now be described. Secured between the bars of the outersection by means of the bolts 20, and serving also to space and supportthe latter on each other, is a bar 56 the lower vedge, of which isadjacent the bottom of the section and formed with rearwardly inclinedratchet teeth 57 with which is adapted to engage a locking dog 58pivotally supported on bracket arms 26 and having pivotally connectedthereto as at 59, a substantially triangular frame 60, which isalsosupported on bracket arm 26 concentrically with the dog. Pivotallysecured to the other corner of frame 60 is a push rod 61 passing looselythrough an eye 62 on the boom and provided adjacent the latter with ahead portion 63 to which is pivotally connected a rod 64. A spring 65coiled about rod 61 between eye 62 and head 63 normally urges dog 58into engagement with ratchet bar 56. Rod 64 extends adjacent the innerend of the boom and is pivotally connected at 66 with a lever 67pivotally supported at 68 on a bracket on the boom and having a handle69 extending upwardly over platform 10 by means Iof dog may be moved outof engagement w1th the ratchet bar on the boom. By means of thisconstruction the outer boom 'section may be locked against movement, andwhen the outer end of the boom has been elevated and cable 40 paid outtodischarge the contents of the bucket, lockin dog 58 may be withdrawnfrom the rate et bar on the outer section by means of handle 69 so thatinward telescopic the outer section slides inwardly Within the innersection to retract the bucket. It is obvious from this construction alsothat under some conditions of operation the locking dog 58 may be heldinoperative as by means of handle 69 and the boom section 20 and bucketheld extended by tension mainline, by braking or otherwise holding itsdrum 39, until 1t is desired to dump thebucket. AThe slackening of thedigging line then allows the bucket to dump and releases the same andthe outer boom section for inward telescopic movement to initial dig ingposition. Thus the outer section may e moved in either direction asdesired and a single cable serves to forcibly extend the outer boomsection to excavate the material while at the same time automaticallycontrolling the disposition of the bucket as required for operatlon.With the locking dog held inoperative, the outer boom section and bucketmay be advanced and retracted and elevated for dumping by merelymanipulating the fall and digging lines, and by holding the fall line,as by same therefrom.

l braking or'otherwise holding its drum 30, the bucket may be advancedto dig and then retracted by merely drawing in and paying 0E the diggingline alone which causes the bucket to describe an arcuate path elevated.at'its outer end as convenient for dumping into 4a vehicle. Bymanipulating both the fall and digging lines, the bucket may be causedto descrlbe any desired path for either digging or scraping operations,and dumping, and'manipulation of the digging line alone causes thebucketl to describe an arcuate path as stated, for digging and dumpingthe bucket, as useful, for example, in digging into the side of abank,.especially in view vof the simplicity of control. It is to benoted that in this embodiment the bucket extends in advance `of the endof the boom so that the latter does not interfere with such operationsfor example as digging into a bank Y In Figures, 5, 6 and 7 is shown amodified form of construction in which the bucket is slidably supportedon a unitary boom by means of a trolley device instead of by atelescopic boom section and inthis modification also a single cableserves both to move the bucket longitudinally of the, boom and todispose the same in position for either excavating the material ordischarging the In the modication the boom comprises spaced channel bars7 O having their flanges turned outwardly. Rolling on the upper slde ofthe lower flanges are rollers 71 rotating on trunnions 72 carried by atrolley device comprising arms 73 extending above and below the boom andattached at their lower ends to side bars 74. The latter carry bolts 75onv which is pivotally suported at the top of its rear end the bucket 7which asl before is open at'its top and front end. 4 The forward ends ofbar 74y carry a roller 78 over which is adapted to engage the upperhooked end of a member 79 pivote/d at 80 on lugs 8l on a bar 82extending across the upper forward `end of the 'bucket and secured tothe sides thereof. The hooked portion 83 of member 79 is inclinedupwardly so that when released from support it will tend to slide offroller 78 and release the'forward end of'the bucket so that the lattermay swing to a vertical position vabout its pivot and discharge itscontents, this action of member 79 being assisted if desired, by asuitable counterweight 84 attached thereto. jection 84 extending underroller 7 8 and to this portion of the member is attached the forward endof a cable 85 passing upwardly over a sheave 86 rotatably carriedbetween the outer endsof the boom bars from whence the cable passesrearwardly along the boom -over suitable guiding means and to thewinding drum. constructlon It is apparent vfrom this that elevation ofthe outer end Member 79 has a progravity inwardly of the boom by meansof a suitable cable 87, and paying out of cable 85 permits the bucket tofirst swing to vertical discharging position and then to roll inwardlyof the boom, while winding in of the cable serves to raise the bucket toexcavating position as shown in the drawings so thatmember 79 engagesover roller 7 8 and serves to support the bucket in such position aslong as the cable is maintained taut. Continued winding in of the cablethen forces the bucket outwardly of the boom to excavate the ma.-terial.

A means is provided in this modification also for locking the bucketagainst movement longitudinally of the boom, comprising a locking bar 88-extending longit-udinally of the boom and provided with slots 89embracing bolts 90 which guide the bar for aA vertical movement and alsoserve to the channel bars of the boom on each The lower edge of lockingbar 88 rests on la plurality of cam rollers 91 eccentrically androtatably supported by trunnions 92 in bearing openings in the channelbars. Fixed to each cam roller is an ar'm 93 extending upwardly andhaving'pivotally connected to its upper end a pullrod 94 carried bysuitable connections to the platform 10. Movement of bar 94 inwardly ofthe boom turns cam rollers 91 and forces bar 88 upwardly so that itsupper edge is brought into clamping engagement with a frame 95 securedas by means of bolts 96 to the upper ends of arms 73 of the buckettrolley, thereby locking the bucket in adjusted position on the boom.The operating bar 94 may of course be spring actuated if so desired, anditis apparent from the construction described t-hat, with the bucketthus locked in adjusted position adjacent the outer end of the boom, thelatter may be ele-k vated and cable 85 slackened to allow the bucket todischarge its contents after which the bucket may be unlqcked andallowed by further paying out of cable 85 to slide by along the boom.When cable 85 is then drawn inwardly the bucket is raised and secured inexcavatin position on the boom and is moved outwarl latter to scrape upthe material.

The operation of the invention has been described in connection with theexplanation of the construction. The invention is capable of applicationto various types of excavating machines and the preferred form, byreason of the location of the bucket or shovel on the outer end of theboom, as well as the construction and arrangements for operating thesame, aiords the combination in a single apparatus of both a shovel forgeneral excavating work and 4a scraping bucket or skimmer for leveling asurface to grade. By reason of its simplicity the cost of manufacture issmall. The arrangement slight brace other.

y of the and operation of the parts, while securing the aboveadvantages, affords also a mechanism which is convenient to handle andrapid and effective in operation.

I claim as my invention:

l. In an excavating'machine, the combination of a mast, a longitudinallyextensible boom supported for vertical and horizontal swingingmovements, a bucket on said boom, a fall line connecting said mast andboom and adapted primarily to eliect vertical swinging movement of thelatter, a. digging line connected with the boom for primarily effectingextensible movement thereof and adapted conjointly with said fall lineto control the movements of said boom in a vertical plane, and poweroperated means for actuating said lines.

2. In an excavating machine, the combination of a mast, a boom supportedfor vertical and horizontal swinging movements and for longitudinal recirocatin di 'n move ment, a bucket onlisaid boogin, agcgalblr carried bysaid mast and connected with said boom for swinging the lattervertically and effecting reciprocating movement thereof in onedirection, a second cable'extending longitudinally of said boom foreffecting reciproeating movement thereof in the other direction, andmeans for actuating said cables.

3. An excavating machine comprising a mast, a boom constructed oftelescoping Sections one of which is supported for vertical andhorizontal swinging movements 'and the other for reciprocating diggingmovement on the first section, a bucket on said other boom section, acable carried by said mast and connected with' said other section, andarranged to swing the boomA vertically, a second cable connected withsaid other section and arranged to reciprocate the same,

and means for actuating said cables to effect digging movement of saldboom and bucket.

4. An excavating machine comprising a. frame, an inner boom sectionsupported fon vertical an-d horizontal swinging movements on said frame,ing a reciprocating digging movement on sai inner section, a bucketadjacent the outer end of said outer section, a. fall line connectedwith said outer section, a digging line extended along said innersection and connected with the outer section for recip rocating thelatter, and means for actuating said lines to effect digging movement ofsaid boom sections and bucket.

5. Al combined excavating shovel and skimmer comprising a frame, a mastthereon, an inner boom section supported on the frame for vertical andhorizontal swinging movements, an outer boomsection provided with abucket and telescopically supported and guided on the inner section forrecipro catlng excavating and s g movean outer boom section hav-y ments,a fall line carried by said mast and connected with said outer section,a digging line carried by said inner section and connected with said;outer section, and power operated means for actuating said lines toeffect digging and skimming movements of said boom and bucket.

6. A combined excavating shovel and skimmer comprising a frame, a mastthereon, an inner boom sect-ion constructed of a pair of beams connectedin spaced relation and supported on said frame for vertical andhorizontal swinging movements, an outer boom section telescopicallysupported and guided between the beams of said inner section forreciprocating excavating and skimming movements, bucket means adjacentthe outer end of said outer section adapted to be disposed in eithermaterial retaining or dumping position, a fall line carried by said mastand connected with said outer section, a'digging line carried by saidinner section and connected with said outer section through attachmentto said bucket means, and means for actuating said lines to effectexcavating and skimming movements of sai-d boom and bucket andcoincidently controlling disposition of said bucket means in eithermaterial retaining or dumping position.

7. In an excavating machine, the combination of a mast, a boom supportedfor vertical and horizontal swinging movements and for longitudinalreciprocating digging movement, a bucket on said boom, a fall linecarried by said mast and connected with said boom, a digging linecarried longitudinally of said boom for effecting reciprocating movementthereof, means for actuating said lines, and locking means forreleasably securing said boom against reciprocating movement.

8. An excavating machine comprising a boom having telescopic sections, abucket on one of said sections adapted to be disposed for either.excavating material or dumping the same therefrom, and a common meansfor effecting relative telescopic movement of the boom sections and alsosaid excavating and dumping dispositions of the bucket.

9. An excavating machine comprising a boom having telescopic sections, abucket on the'outer one of said sections adapted to be disposed foreither excavating dumping the same therefrom, and a cable arranged toeect relative telescopic movement of the boom sections andalso saidexcavating and dumping dispositions of thel bucket.

10. An excavating machine comprising a boom having telescopic sections,a lbucket on the outer one of said sections adapted to` be disposed foreither excavating material or dumping the same therefrom, acablearranged to effect relative telescopic movement ltions,

material or of the boom sections and also lsaid excavating and dumpingdispositions' of the bucket, and locking means on said sections forsecuring the same in adjusted position .against relative telescopicmovement.

11. An excavating machine comprising a boom having telescopic sections,a bucket pivotally supported on the outer of said sections, and a cablearranged on said' sections to effect telescopic movement thereof andIconnected with said bucket to control the movement thereof about itspivotal support. 12. An excavating machine comprising a boom havingtelescopic sections, a bucket supported on the outer of said sectionsfor movement to excavating and dumping posi\ tions, sheaves on the outerend of the inner of said sections and on both outer of said sections,and a cable arranged on said sheaves to effect extensional telescopicmovement of said sections and connected with said bucket to effect saidexcavating and dumping movements thereof.

13. An excavating machine comprising a boom supported for vertical andhorizontal swinging movements and formed of telescopically movablesections, a bucket supported on the outer of said sections for movementto excavating and dumping positions, cable guiding means on saidsections,

a cable on said guiding means arranged to effect extensional telescopicmovement of the sections, and connected to said bucket to effect saidexcavating and dumping movements thereof, and releasable locking meansfor securing said sections against contractional telescopic movement.

14. An excavating machine comprisin a boom having telescopic sections, abuc et supported on the outer of sa'd sections for movement toyexcavating and dumping posia connecting element movably attached tosaid bucket and adapted for supporting engagement With the boom, a cablearrange on the boom to effect telescopic movement of said sections andextended over the outer end thereof and connected with said element toeffect said excavating and dumpingmovements of the bucket, said elementbeing brought by said 'cable into supporting engagement with the boomupon excavating movement of the bucket, and releasable locking means forsecuring said boom sections against telescopic movement. t

r 5. An excavating machine comprising a boom having telescopic sections,a bucket on the outer one of said sections adapted to be positioned foreither excavating materialor dum ing the same therefrom, a device forholding the bucket in excavating position, and a common I'means foreffecting relative telescopic movement of the boom sections andcontrolling movement of the bucket to said excavatin or dumpingpositions an controlling sai holding device.

ends of thesecuring said boom sections against telesco ic movement afteradjustment.

l In an excavating machine, the combination of a mast, a boom supportedfor vertical and horizontal swinging movements and for longitudinalreciprocating digging movement, a bucket means pivotally supported onsaid boom, a fall line carried by said mast and connected with saidboom, a digging line carriedlongitudinally of said boom and securedthereto through connection with said bucket means for pivotallyactuating the latter and reciprocating said beam, and locking means #Forreleasably securing said beam against reciprocating movement.

18. An excavating machine comprising an inner boom section supported forvertical and horizontal swinging movements, an

outer boom section supported and guided on said inner section forreciprocating digging movement, a bucket on said outer section, a fallline connected with said outer section, a sheave adjacent the outer endof said inner section, a digging line carried over said sheave andthence mwardly of the boom and connected with the outer section toeffect outward reciprocating movement thereof, and means for actuatingsaid lines to effect digging movements of said outer section and bucket.a i

19. A combined excavating shovel and skimmer comprising a frame, a'mastthereon, aninner boom section supported on the frame for vertical andhorizontal swinging movements, an outer boom section provided with abucket and telescopically supported and guided on the inner section forreciprocating excavating and skimming movement-s, a fall line carried bysaid mast and connected with said outer section, a sheave adjacent theouter end of said inner secn tion, a digging line carried over saidsheave and thence rearwardly of the boom and connected with said outersection to effect outward reciprocating movement thereof, and means foractuatin ging movements o? bucket.

said outer section and JoHN G. roGAR'rY.

said lines to effect dig-

